My experience has been similar. There are a lot of Redtails (magnificent birds!) around our field, and they have never attacked my planes. They do seem to become somewhat territorial in the summer and screech continuously if I stand too close to one of "their" trees. It is interesting to watch the Redtails get harassed by other smaller birds when the hawks get too close to their nesting sites.
While slope soaring, seagulls would frequently fly close to the plane out of curiosity, I suppose. They never attacked. They are masterful fliers and know how to work the lift.
One summer day, the field was inundated with some small brown flies that had apparently just hatched. I had never seen anything like it. This attracted a sky full of birds. There were birds everywhere snapping up these insects in flight. While flying, I wondered how long it would be before I had a midair collision. Nothing happened as the birds had no trouble avoiding the plane as they feasted.